Toothbrush head



FIG. 1 is a front perspective view from above and one side of a toothbrush head showing my new design;

FIG. 2 is a front view of the article;

FIG. 3 is a rear view of the article;

FIG. 4 is a view of the other side of the article;

FIG. 5 is a top plan view of the article; and,

FIG. 6 is an underneath plan view. 

The ornamental design for a toothbrush head, as shown and described. 